-- Comments are introduces with two hyphens (much like in SQL)
"abc"
is syntactic sugar for 'a': 'b': 'c': []
a:b:c:d
is shorthand for a:b:(c:d)
let (x, y, z) = (42, 99, 7) in … let (char1:char_2:char3:[]) = "abc" in …
let (first_char:_:_:[]) = "abc" in first_char